Compare Model Drawings, CAD & Specs Full Scale Pressure Analog Output Fitting Type Electrical Connector Availability Price
aa08a high pressure, flow-through, pressure transducer
Pressure Transmitter, 100 psia, Flow-through, 4-20 mA, 0.25 in. Weld Stubs, Flying Leads
$1,235
100 psia 4-20 mA 0.25 in. weld stub 6 ft. flying leads
Pressure Transducer, 100 psia, Flow-through, 0-10 VDC, 4 VCR Female, 15-pin HD
$1,035
100 psia 0-10 VDC 4 VCR female 15-pin high density type D on 9 in. flying lead
aa08a high pressure, flow-through, pressure transducer
Pressure Transducer, 100 psia, Flow-through, 0-10 VDC, 4 VCR Female, 15-pin HD, LDM-C
$1,385
100 psia 0-10 VDC 4 VCR female 15-pin high density type D
Pressure Transducer, 1000 psia, Flow-through, 0-5 VDC, 4 VCR Male, DB15, LDM-C
$1,035
1000 psia 0-5 VDC 4 VCR male, nonrotatable 15-pin high density type D
aa08a high pressure, flow-through, pressure transducer
Pressure Transducer, 1000 psia, Flow-through, 0-10 VDC, 1.125 inch W-seal, Bendix 4-pin
1000 psia 0-10 VDC 1.125 in. W-seal surface mount Bendix 4-pin on 9 in. flying lead
aa08a high pressure, flow-through, pressure transducer
Pressure Transducer, 1000 Torr, Flow-through, 0-10 VDC, 4 VCR-M, 15-pin HD on Flying Lead
$1,410
1000 Torr 0-10 VDC 4 VCR male 15-pin high density type D
aa08a high pressure, flow-through, pressure transducer
Pressure Transducer, 1000 Torr, Flow-through, 0-5 VDC, 1.125 inch C-seal, 15-pin HD on Flying Lead
1000 Torr 0-5 VDC 1.125 in. C-seal surface mount 15-pin high density type D on 9 in. flying lead
aa08a high pressure, flow-through, pressure transducer
Pressure Transmitter, 3000 psia, Flow-through, 4-20 mA, 0.25 in. Weld Stubs, Flying Leads
3000 psia 4-20 mA 0.25 in. weld stub 10 ft. flying leads
aa08a high pressure, flow-through, pressure transducer
Pressure Transducer, 3000 psia, Flow-through, 0-10 VDC, 4 VCR male, DB9 on Flying Lead
$1,100
3000 psia 0 - 10 VDC 4 VCR male, nonrotatable 9-pin type D on 9 in. flying lead
aa08a high pressure, flow-through, pressure transducer
Pressure Transducer, 250 psia, Flow-through, 0-10 VDC, 4 VCR Male, DB9 on Flying Lead
$1,035
250 psia 0-10 VDC 4 VCR male 9-pin type D on 9 in. flying lead

Configuration Options

Description
  aa08a high pressure, flow-through, pressure transducer AA08A Absolute Capacitance Manometer, Flow-through, AA08A Micro-Baratron

Specifications

  • Configuration
    Flow-through
  • Measurement Type
    Absolute
  • Full Scale Pressure
    1000 Torr to 3000 psia
  • Accuracy
    1.0% of Reading
  • Zero Temperature Coefficient
    0.02% of Full Scale/°C, 50 psia to 3000 psia
    0.04% of Full Scale/°C, 1000 Torr
  • Span Temperature Coefficient
    0.04% of Reading/°C, 50 psia to 3000 psia
    0.08% of Reading/°C, 1000 Torr
  • Overpressure Limit
    1.5 x Full Scale for ranges from 1000 Torr to 500 psi
    1.2 x Full Scale for ranges from 501-3000 psi
  • Burst Pressure
    10 x Full Scale for ranges from 1000 Torr to 500 psi
    5 x Full Scale for ranges from 501-3000 psi
  • Wetted Surfaces
    Incoloy®
  • Surface Finish
    ≤10µ in Ra
  • Power Requirements
    13 to 32 VDC @ 10 mA max.
  • Ambient Operating Temperature
    0° to 50°C
  • Compliance
    CE

Features

Baratron® Capacitance Manometer Technology

Capacitance manometers are electro-mechanical gauges that can measure both pressure and vacuum. The capacitance gauge translates a pressure-modulated movement in a thin diaphragm into an electrical signal proportional to the pressure. The pressure sensor is the thin diaphragm that is exposed to the pressure or vacuum being measured via the inlet tube. An electrode is mounted in the reference cavity behind the diaphragm. Pressure differences between the process and the reference cavity deflect the diaphragm slightly, changing the distance between it and the electrode. Variations in this distance produce variations in the capacitance between the diaphragm and the electrode creating an electrical signal that is proportional to the pressure change. Since differences in the capacitance signal are produced by physical changes within the manometer and not by changes in the gas properties, pressure measurements by the capacitance manometer are independent of the composition of the gas being measured.

Gas independent pressure measurement with a Baratron® capacitance manometer. Schematic shows the internal components and functional zones.

Percent of Reading Accuracy

Accuracy is specified as a percent of Reading, not Full Scale, as seen in some of the lower performance devices. Percent of Reading accuracy provides you with an even more accurate output signal in the lower scale of the pressure range, where it is needed most.

Ideally Suited for Ultrapure Gas Delivery Systems

The AA07A/AA08A transducers are ideally suited for use in delivery systems that feed ultrapure gases to critical process systems. Their wetted surfaces exposed to the gas stream have a finish of better than 5 µin Ra. These transducers exhibit superior dry-down characteristics, and contribute no particles above background. After manufacture and assembly, they are purged with ultraclean nitrogen prior to double bagging in a class 100 environment.

All Incoloy® Construction

The all-Incoloy® construction of the sensors in the AA07A/ AA08A allows for high overpressure tolerances that reduce errors due to line pressure spikes. High burst pressure ratings contribute to overall system safety. On existing gas cabinets and process systems, field replacement of common dial gauges or lower performance transducers is made easy due to the small size, industry standard endto-end lengths, and electrical interface choices of these transducers.

Optional Local Display

The optional local integrated display provides a digital readout of the line pressure at the transducer. The display, which is available on the 1000 Torr, 100 and 250 PSIA ranges with the 0-10 VDC output signal, provides a highlyvisible red LED display of the pressure and the units of measurement. The display can also be switched to show any of four different units (PSIA, Torr, bar, and kPa) without requiring recalibration or re-ranging of the transducer itself. It takes its power from the incoming transducer voltage, so no additional cables are required.

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